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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to Deal with Threats and Opportunities
Isn’t it difficult to tackle certain situations when one wrong step can change the entire consequences? Yes, some situations make us dumbfound, and paralyze our decision-making capabilities whether that has a positive or negative impact on our project’s life. So, don’t you think that it is better to have some tools and techniques to deal with such threats and opportunities?Irrespective of the project’s duration and intricacy, risks are always there and in the case of long-term complex projects, the level of risks increases manifolds. So, to minimize the negative impact on our projects, we should have a concrete plan with ...
Read MoreHow to Deal With Team Attrition
Last week, while discussing with my colleagues on various topics, the discussions took an unexpected turn and reached to one of the trending topic called ‘Employee Attrition’. Frankly saying it was not unexpected, actually for the last couple of months we have been seeing many ‘good-bye’ or ‘keep in touch’ kind of parting emails almost twice or thrice in a week. Everybody is discussing on it, whether it is during lunch time or coffee breaks, the gossip and rumors are in the air!These type of discussions are not only restricted to one company. Actually, you can see such trends in ...
Read MoreHow to Create/Add a New Virtual Disk for an Existing Linux Virtual Machine
This article helps you to create and add a new virtual disk to an existing Linux virtual machine on VMware. Here are some steps for adding a new SCSI based virtual disk on a CentOS Linux virtual machine. We are assuming that you are already familiar with Linux system administration skills and having knowledge of vCenter Server or vSphere Client. For a full description of the utilities mentioned in this article, please refer to the manuals.SolutionTo add a new virtual disk for an existing Linux virtual machine, Log in as root on your Linux virtual machine. Run this below command ...
Read MoreHow to Create a RAID 5 Storage Array with 'mdadm' on Ubuntu 16.04
In this article, we will learn how to create a RAID 5 Array configuration using the ‘mdadm’ utility.The ‘mdadm’ is a utility which is used to create and manage storage arrays on Linux with RAID capability where the administrators are having great flexibility in managing the individual storages devices and creating the logical storage with a high performance and redundancy.RAID 5 Array is a type where we implement by striping the data across the total available devices. Every component of the each stripe is calculated by parity block. If any device fails the parity block, it will use the remaining ...
Read MoreHow to Create a RAID 0 Storage Array with 'mdadm' on Ubuntu 16.04
In this article, we will learn how to create a RAID 0 Array configuration using the ‘mdadm’ utility.The ‘mdadm’ is a utility which is used to create and manage storage arrays on Linux with RAID capability where the administrators are having a great flexibility in managing the individual storage devices and creating the logical storage with a high performance and redundancy.RAID 0 array will work by dividing the data into small chunks and strips that data across the available storage disks, which means that each and every storage disk will contain a portion of data and when retrieving the data ...
Read MoreDifference between Object level lock and Class level lock in Java
In multithreading environment, two or more threads can access the shared resources simultaneously which can lead the inconsistent behavior of the system. Java uses concept of locks to restrict concurrent access of shared resources or objects. Locks can be applied at two levels −Object Level Locks − It can be used when you want non-static method or non-static block of the code should be accessed by only one thread.Class Level locks − It can be used when we want to prevent multiple threads to enter the synchronized block in any of all available instances on runtime. It should always be ...
Read MoreHow to Configure Nagios Server for Monitoring Apache Server
In this article, we will be covering about the installation of Nagios 4, a very popular and open source monitoring tool on Centos 6.7. We shall cover some basic configuration steps which might be useful to monitor a host of resources via the web interface. Here, we shall also utilize the Nagios Remote Plugin Executor (NRPE) that is installed as an agent on remote hosts to monitor the local resources of Servers/clients.Nagios is useful for keeping an inventory of your servers, and making sure your critical services are up and running. Using a monitoring system, Nagios is an essential tool ...
Read MoreDifference between oracle golden gate and oracle active guard in the oracle
Oracle golden gate and oracle active data guard is the data replication technologies. They both are used for data replication but with different strategy. As per the oracle docs −Oracle Active Data Guard provides the best data protection and availability for Oracle Database in the simplest most economical manner by maintaining an exact physical replica of the production copy at a remote location that is open read-only while replication is active. GoldenGate is an advanced logical replication product that supports multi-master replication, hub and spoke deployment and data transformation, providing customers very flexible options to address the complete range of replication requirements. ...
Read MoreLenovo confirms New Moto 360 2
In our most recent Mobile Updates, we told you about the widespread rumors of upcoming Moto 360. And now Lenovo confirms this by sending an invite out to the launch conference in Shanghai on September 8th, accompanied by the words “it’s time”.And by the looks of it, the Watch button is at 2 ‘O’ Clock position.New Moto 360The new Moto360 might come in two sizes and different colors, which is clearly logical. The Watch button is at 2 O Clock position, which is definitely more convenient than a button at 3 O Clock position.
Read MoreHow To Configure mod_rewrite for Apache on CentOS 7
In this article, we will learn about how to configure the mod_rewrite for Apache on CentOS 7, Apache is a very popular web server which allows us to customize and enable its capabilities and disable them. if we now needed more, the Apache administrator has permissions to change according to our needs of the web application.PrerequisitesWe needed a Linux machine installed with CentOS 7.We need a non-root user with sudo permissions.Installing the Apache Web ServerWe will install the Apache Web Server using yum as, Apache is available with the default packages with the management utility of the CentOS repository.The Apache ...
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